1,720,957 research outputs found
La matematica in pratica. Curricolo, performance e materialità nell'insegnamento e nell'apprendimento della matematica
No full textQuesto lavoro è frutto di un’etnografia multisituata (Marcus, 1995) svolta nell’a.s. 2010-2011 in cinque istituti secondari di secondo grado di Roma ed all’interno dell’organizzazione che fa riferimento al progetto delle Olimpiadi della Matematica.
Le Olimpiadi della Matematica sono un progetto volto alla valorizzazione delle “eccellenze” in matematica in base al decreto legislativo n. 262 del dicembre 2007, promosso dal Ministero dell’istruzione, dell’Università e della Ricerca, organizzato dall’Unione Matematica Italiana in collaborazione con la Scuola Normale Superiore di Pisa. Si tratta di una gara di risoluzione di problemi matematici inerenti all’algebra, la geometria, la teoria dei numeri ed il calcolo combinatorio.
L’obiettivo della tesi è di indagare le pratiche di insegnamento e di apprendimento della matematica nei due contesti, unitamente si approfondiscono le pratiche di valutazione di sistema tramite i dispositivi OCSE-PISA, IEA-TIMSS ed INVALSI e la valutazione degli studenti nell’istituzione scolastica, insieme alle pratiche di selezione nella competizione olimpica.
Le cornici teoriche di riferimento guardano all’Actor-network theory in educazione (Fenwick, Edwards, 2012), agli Science and Technology Studies (STS), ai practice-based studies ed al concetto di curricolo situato (Gherardi, Nicolini, 1998) e la sua traduzione in ambito educativo (Fenwick, Edwards, 2010).
Dal punto di vista metodologico si sono svolte delle osservazioni per l’intero anno scolastico in cinque classi quinte durante le tradizionali lezioni mattutine di matematica, negli allenamenti pomeridiani nelle scuole per la competizione olimpica, nelle gare presso gli istituti, nelle Università, nella finale nazionale di Cesenatico e nello stage di formazione/selezione che si tiene a Pisa dei membri del team italiano che parteciperà alle International Mathematical Olympiad. Oltre alle osservazioni si sono redatte delle note di campo ed effettuato un numero considerevole di interviste. Per quanto riguarda nello specifico il progetto olimpico si è ricostruita la forma del network ed il relativo networking, l’ecologia degli attori attraverso cui passa la conoscenza e l’apprendimento della matematica secondo un’ottica di cooperazione organizzativa ed inter-organizzativa (Bruni, 2008).
Il lavoro si propone di mostrare come la conoscenza matematica possa essere intesa alla stregua di una pratica scientifica e sociale che è possibile posizionare all’interno di diversi networks composti da materiali eterogenei (Law, 1992), derivanti da differenti comunità epistemiche (Amin, Cohendet, 2003) in cui si producono delle pratiche sociomateriali (Orlikowski, 2007) e situate (Lave, Wenger, 2006) che si collegano ad un curricolo allo stesso modo situato
Trajectories of Women in Mathematics and Computer Science: Mobility, Positioning and Hybridization
No full textThis paper focuses on the trajectories of women within educational and professional paths in science and technology. The paper draws on the narratives of women working in scientific careers in order to open the black box of the fields under analysis – mathematics and computer science – and trace their current reconfigurations.
Empirically, the focus on the trajectories of women constitutes an analytical lens whereby to detect the internal articulation of mathematics
and computer science, which, as we shall see, are academic disciplines affected by different dynamics. These cases are discussed in order to show three emerging dynamics that characterize their trajectories in educational and professional paths: mobility, positioning, hybridization
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
